Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net loss	$ (47,120,000)	$ (24,675,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of patent portfolio	$ 5,594,000	7,354,000
Non-cash registration rights penalty		654,000
Change in fair value of warrant liabilities	$ 774,000	(47,000)
Stock-based compensation	$ 223,000	11,954,000
Issuance of common stock - financial advisor		$ 225,000
Depreciation expenses	$ 1,000
Unrealized gain on marketable securities	45,000
Impairment of goodwill and intangible assets	37,212,000
Changes in assets and liabilities:
Prepaid expenses and other assets	$ 87,000	$ 83,000
Security deposits		4,000
Accounts payable and accrued expenses	$ (287,000)	(125,000)
Accrued salaries and benefits	(114,000)	$ (194,000)
Accrued lease liabilities	(129,000)
Net cash used in operating activities	(3,714,000)	$ (4,767,000)
Cash flows from investing activities
Purchase of marketable securities	$ (3,774,000)
Purchase of property and equipment		$ (4,000)
Sale of marketable securities	$ 6,454,000
Payment of accrued patent costs		$ (1,000,000)
Net provided by (cash used) in investing activities	$ 2,680,000	(1,004,000)
Cash flows from financing activities
Proceeds from issuance of common stock and warrants, net	$ 1,321,000	3,874,000
Proceeds from issuance of preferred stock, net		18,387,000
Redemption of Series I redeemable convertible preferred stock	$ (935,000)	(14,065,000)
Net cash provided by financing activities	386,000	8,196,000
Net (decrease) increase in cash and cash equivalents	(648,000)	2,425,000
Cash and cash equivalents, beginning of period	805,000	3,125,000
Cash and cash equivalents, end of period	$ 157,000	$ 5,550,000
Cash paid for interest and taxes
Non-cash investing and financing activities
Retirement of treasury stock		$ 201,000
Conversion of preferred stock to common stock		$ 3,000